Bird Sudoku Level 143 Hint
Pick a row, column, or habitat with a low remaining count, then check which of its perch cells are blocked by open diagonal flight lines.
Bird Sudoku Level 143 Strategy
Hard Level 143 uses a 8x8 board with 27 perch cells, 10 blockers, and 7 habitats. Use the row and column counts first, then test each open diagonal flight line.
Bird Sudoku Level 143 Solution
Bird positions in the solution: R1C4, R2C2, R3C7, R5C2, R5C3, R6C5, R6C8, R7C1, R8C1, R8C4.